content: /**
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
   * compliance with the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License is
   * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
   * the License for the specific language governing permissions and limitations under the License.
   */
  
  package io.reactivex.observable.internal.operators;
  
  
  
  import java.util.*;
  
  import org.junit.Test;
  
  import io.reactivex.common.*;
  import io.reactivex.common.exceptions.TestException;
  import io.reactivex.observable.Completable;
  import io.reactivex.observable.observers.TestObserver;
  import io.reactivex.observable.subjects.PublishSubject;
  
  public class CompletableMergeIterableTest {
  
      @Test
      public void errorRace() {
          for (int i = 0; i < 500; i++) {
              List<Throwable> errors = TestCommonHelper.trackPluginErrors();
              try {
                  final PublishSubject<Integer> ps1 = PublishSubject.create();
                  final PublishSubject<Integer> ps2 = PublishSubject.create();
  
                  TestObserver<Void> to = Completable.merge(
                          Arrays.asList(ps1.ignoreElements(), ps2.ignoreElements())).test();
  
                  final TestException ex = new TestException();
  
                  Runnable r1 = new Runnable() {
                      @Override
                      public void run() {
                          ps1.onError(ex);
                      }
                  };
                  Runnable r2 = new Runnable() {
                      @Override
                      public void run() {
                          ps2.onError(ex);
                      }
                  };
  
                  TestCommonHelper.race(r1, r2, Schedulers.single());
  
                  to.assertFailure(TestException.class);
  
                  if (!errors.isEmpty()) {
                      TestCommonHelper.assertUndeliverable(errors, 0, TestException.class);
                  }
              } finally {
                  RxJavaCommonPlugins.reset();
              }
          }
      }
  
      @Test
      public void cancelAfterHasNext() {
          final TestObserver<Void> to = new TestObserver<Void>();
  
          Completable.merge(new Iterable<Completable>() {
              @Override
              public Iterator<Completable> iterator() {
                  return new Iterator<Completable>() {
                      @Override
                      public boolean hasNext() {
                          to.cancel();
                          return true;
                      }
  
                      @Override
                      public Completable next() {
                          return Completable.complete();
                      }
  
                      @Override
                      public void remove() {
                          throw new UnsupportedOperationException();
                      }
                  };
              }
          }).subscribe(to);
  
          to.assertEmpty();
      }
  
      @Test
      public void cancelAfterNext() {
          final TestObserver<Void> to = new TestObserver<Void>();
  
          Completable.merge(new Iterable<Completable>() {
              @Override
              public Iterator<Completable> iterator() {
                  return new Iterator<Completable>() {
                      @Override
                      public boolean hasNext() {
                          return true;
                      }
  
                      @Override
                      public Completable next() {
                          to.cancel();
                          return Completable.complete();
                      }
  
                      @Override
                      public void remove() {
                          throw new UnsupportedOperationException();
                      }
                  };
              }
          }).subscribe(to);
  
          to.assertEmpty();
      }
  }
  